<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="js/vue.js"></script>
</head>
<body>
    <div id="app">
        <button @click="handleClick"> 点我触发 </button>
        <input type="text" @change="handleInput">
    </div>
    <script>
        new Vue({
            el:"#app",
            data:{
                val:""
            },
            methods:{
                handleClick(){
                    console.log(this.val);
                },
                handleInput(e){
                    // console.log(e.target.value);
                    this.val = e.target.value
                }
            }
        })
    </script>
</body>
</html>